CN116239934A - External wall heat preservation system based on heat preservation clay reflective heat insulation coating - Google Patents
External wall heat preservation system based on heat preservation clay reflective heat insulation coating Download PDFInfo
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- CN116239934A CN116239934A CN202310479694.0A CN202310479694A CN116239934A CN 116239934 A CN116239934 A CN 116239934A CN 202310479694 A CN202310479694 A CN 202310479694A CN 116239934 A CN116239934 A CN 116239934A
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- Prior art keywords
- heat
- parts
- reflective
- heat insulation
- external wall
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- 239000011248 coating agent Substances 0.000 title claims abstract description 84
- 238000009413 insulation Methods 0.000 title claims abstract description 78
- 238000004321 preservation Methods 0.000 title claims abstract description 25
- 239000004927 clay Substances 0.000 title description 2
- 239000000839 emulsion Substances 0.000 claims abstract description 42
- 239000004964 aerogel Substances 0.000 claims abstract description 39
- 229920000642 polymer Polymers 0.000 claims abstract description 39
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000004568 cement Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 15
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- 239000004408 titanium dioxide Substances 0.000 claims abstract description 12
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- 239000003431 cross linking reagent Substances 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 19
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- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
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- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 11
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 11
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 11
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 10
- 229920000459 Nitrile rubber Polymers 0.000 claims description 9
- 239000013530 defoamer Substances 0.000 claims description 9
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- WMDZKDKPYCNCDZ-UHFFFAOYSA-N 2-(2-butoxypropoxy)propan-1-ol Chemical group CCCCOC(C)COC(C)CO WMDZKDKPYCNCDZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 7
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- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- ZPSUIVIDQHHIFH-UHFFFAOYSA-N 3-(trifluoromethyl)-4-[2-(trifluoromethyl)phenyl]benzene-1,2-diamine Chemical group FC(F)(F)C1=C(N)C(N)=CC=C1C1=CC=CC=C1C(F)(F)F ZPSUIVIDQHHIFH-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 6
- 238000001723 curing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000007790 scraping Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 4
- 238000004108 freeze drying Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 4
- OBQPKGCVMCIETH-UHFFFAOYSA-N 1-chloro-1-(1-chloroethoxy)ethane Chemical compound CC(Cl)OC(C)Cl OBQPKGCVMCIETH-UHFFFAOYSA-N 0.000 claims description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 claims description 3
- 125000003342 alkenyl group Chemical group 0.000 claims description 3
- XSDCTSITJJJDPY-UHFFFAOYSA-N chloro-ethenyl-dimethylsilane Chemical compound C[Si](C)(Cl)C=C XSDCTSITJJJDPY-UHFFFAOYSA-N 0.000 claims description 3
- 230000001804 emulsifying effect Effects 0.000 claims description 3
- 125000000524 functional group Chemical group 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 3
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000004005 microsphere Substances 0.000 claims description 2
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- 230000000694 effects Effects 0.000 abstract description 12
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- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 4
- 235000019345 sodium thiosulphate Nutrition 0.000 description 4
- 239000012086 standard solution Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 125000001165 hydrophobic group Chemical group 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
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- 125000001309 chloro group Chemical group Cl* 0.000 description 1
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- 239000003999 initiator Substances 0.000 description 1
- WORCCYVLMMTGFR-UHFFFAOYSA-M loxoprofen sodium Chemical compound [Na+].C1=CC(C(C([O-])=O)C)=CC=C1CC1C(=O)CCC1 WORCCYVLMMTGFR-UHFFFAOYSA-M 0.000 description 1
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/062—Copolymers with monomers not covered by C09D133/06
- C09D133/066—Copolymers with monomers not covered by C09D133/06 containing -OH groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/762—Exterior insulation of exterior walls
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B2001/7691—Heat reflecting layers or coatings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of external wall heat preservation, and discloses an external wall heat preservation system based on heat preservation cement reflective heat insulation coating, which comprises a wall base layer, a heat preservation layer, a primer layer and a reflective heat insulation coating, wherein the reflective heat insulation coating is formed by uniformly coating the reflective heat insulation coating on the surface of the primer layer, the reflective heat insulation coating is formed by taking organosilicon modified acrylate emulsion as a base material and assisting in polymer aerogel, a film forming auxiliary agent, a defoaming agent, rutile type titanium dioxide, hollow glass beads and a thickening agent through physical blending, and the reflective heat insulation coating has the basic effects of reflecting sunlight, heat insulation and the like and also has higher bonding strength, hardness, heat resistance and hydrophobic property, so that the external wall heat preservation system is beneficial to being used in various environments.
Description
Technical Field
The invention relates to the technical field of external wall insulation, in particular to an external wall insulation system based on insulation cement reflective insulation coating.
Background
Along with the continuous development of building energy-saving concepts, higher requirements are put forward on building energy-saving engineering, at present, in order to meet the heat insulation requirements, the way of configuring a heat insulation layer is generally adopted for external wall heat insulation, a common heat insulation system mainly comprises a rock wool board, an expanded polystyrene board, an extruded polystyrene board, building heat insulation mortar and the like, the materials form the external wall heat insulation system, the heat insulation layer is often thicker, the strength of the heat insulation layer is low, the cracking resistance and other problems are poor, the external wall heat insulation system is easy to fall off, water seepage and other phenomena are easy to occur, the safety and the service life of the external wall heat insulation system cannot be guaranteed, in addition, the external wall heat insulation system is complex in structure and difficult to construct, and therefore, the external wall heat insulation system is difficult to popularize on a large scale in practical application. The reflective heat-insulating coating-heat-insulating cement external wall heat-insulating system takes heat-insulating cement as a heat-insulating layer, and the reflective heat-insulating coating is an external wall heat-insulating system with a heat-insulating decorative layer, so that the energy-saving effect of the building can be achieved by reflecting sunlight and reducing internal and external heat transmission, and the reflective heat-insulating coating-heat-insulating cement external wall heat-insulating system is simple in structure and convenient to construct.
The invention patent of China with the application number of CN201310576896.3 discloses an external wall heat-insulating system of heat-insulating cement reflective heat-insulating paint and a construction process thereof, wherein the external wall heat-insulating system comprises a heat-insulating layer and a coating system, the coating system consists of a bottom coating layer, a putty layer and a reflective heat-insulating paint finish layer, the external wall heat-insulating system has low manufacturing cost and can be popularized and used, but the invention does not disclose specific components of the reflective heat-insulating paint, and cannot confirm what additional attribute the external wall heat-insulating system has. Generally, as the outermost layer of the heat insulation system, the reflective heat insulation coating should have good sunlight reflection effect, and in addition, should have higher hardness and good hydrophobic property, so as to avoid the problems of water seepage and poor sunlight reflection effect caused by coating rupture and rainwater wall hanging due to rubbing.
Based on the above, the invention provides an external wall heat insulation system based on heat insulation cement reflective heat insulation coating, which can be directly used for external wall heat insulation.
Disclosure of Invention
The invention aims to provide an external wall heat insulation system based on heat insulation cement reflective heat insulation coating, which can effectively reflect sunlight and has good reflective heat insulation effect by sequentially arranging a heat insulation cement layer, a primer layer and a reflective heat insulation coating on the outer side of a wall body base layer, and meanwhile, the reflective heat insulation coating also has good heat resistance, hydrophobicity and hardness, so that the problem that water seepage or poor sunlight reflection effect is caused by collision or rainwater wall hanging of the coating is solved.
The aim of the invention can be achieved by the following technical scheme:
an external wall heat insulation system based on heat insulation cement reflective heat insulation coating comprises a wall base layer, a heat insulation layer, a primer layer and a reflective heat insulation coating; the heat-insulating layer is formed by scraping heat-insulating daub on the surface of the wall base layer, and the thickness is 30-80mm; the primer layer is formed by spraying an epoxy zinc-rich primer with the solid content of 60-70% on the surface of the heat insulation layer; the reflective heat-insulating coating is formed by spraying reflective heat-insulating coating on the surface of the primer layer, and the thickness of the reflective heat-insulating coating is 0.2-0.5mm;
the reflective heat-insulating coating comprises the following raw materials in parts by weight: 60-80 parts of organosilicon modified acrylic ester emulsion, 2-4 parts of polymer aerogel, 0.5-2 parts of film forming additive, 0.5-1 part of defoamer, 10-20 parts of rutile type titanium dioxide, 10-25 parts of hollow glass microsphere and 0.2-0.5 part of thickener;
the polymer aerogel is polyphenylene sulfide aerogel;
the preparation method of the reflective heat-insulating coating comprises the following steps:
step one: pouring the organosilicon modified acrylic ester emulsion, the polymer aerogel, the film forming auxiliary agent, the defoaming agent and the thickening agent in parts by weight into a stirrer, and stirring for 30-60min at the rotating speed of 500-1000r/min to obtain premix;
step two: pouring rutile type titanium dioxide and hollow glass beads in parts by weight into a premix, and continuously stirring for 1-2 hours to obtain a reflective heat-insulating coating;
the preparation method of the organosilicon modified acrylic ester emulsion comprises the following steps:
the first step: mixing 8-12 parts of methyl methacrylate, 4-5 parts of butyl acrylate, 2-4 parts of acrylic acid, 1-2 parts of hydroxyethyl methacrylate, 0.5-1 part of OP-10 and 20-30 parts of water, and pre-emulsifying to obtain pre-emulsion;
and a second step of: adding 32-48 parts of methyl methacrylate, 16-25 parts of butyl acrylate, 8-16 parts of acrylic acid, 4-8 parts of hydroxyethyl methacrylate, 1-2 parts of organosilicon cross-linking agent and 0.1-0.2 part of potassium persulfate into the pre-emulsion, raising the temperature of the system to 70-80 ℃, preserving the temperature for 4-12 hours, naturally cooling the emulsion, regulating the pH of the system to be neutral by using ammonia water, and discharging to obtain organosilicon modified acrylate emulsion;
the organosilicon cross-linking agent is prepared by introducing unsaturated alkenyl functional groups at the molecular chain ends of hydroxyl-terminated nitrile rubber.
Further, the film forming auxiliary agent is dipropylene glycol n-butyl ether; the defoamer is SN1340; the particle size of the rutile type titanium dioxide is 200-600nm; the bulk density of the hollow glass beads is less than or equal to 1g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickener is hydroxyethyl cellulose with the molecular weight of 10 ten thousand to 20 ten thousand.
According to the technical scheme, methyl methacrylate, butyl acrylate, acrylic acid and hydroxyethyl methacrylate are used as monomers, an organosilicon cross-linking agent is used as a cross-linking reagent, OP-10 is used as an emulsifier, and potassium persulfate is used as an initiator to perform free radical polymerization reaction to form organosilicon modified acrylate emulsion.
Further, the preparation method of the polymer aerogel comprises the following steps:
step S1: mixing polyphenylene sulfide with dichloromethane, fully swelling, adding methyl chloromethyl ether and stannic chloride, uniformly mixing, placing in a temperature environment of 50-60 ℃ for stirring for 12-24 hours, discharging, and washing and vacuum drying to obtain chloromethylated polyphenylene sulfide;
step S2: mixing chloromethylated polyphenylene sulfide and N-methylpyrrolidone, raising the temperature of the system to 60-80 ℃, stirring to form a uniform solution, adding 2,2' -di (trifluoromethyl) diaminobiphenyl, uniformly mixing, stirring for 4-12h, pouring the solution into a mould, and standing for gel formation to obtain a polymer aerogel material;
step S3: and (3) placing the gel material of the polymer in a temperature environment of 50-60 ℃ for 6-12 hours, washing the gel material by using ethanol and pure water in sequence, and obtaining the polymer aerogel through freeze drying and curing processes.
Further, in step S1, the polyphenylene sulfide has an average molecular weight of 10000.
Further, in the step S2, the mass ratio of the chloromethylated polyphenylene sulfide to the 2,2' -bis (trifluoromethyl) diaminobiphenyl is 1:0.4-0.6.
Further, in step S3, the temperature during curing is 80-100 ℃ and the time is 12-24 hours.
According to the technical scheme, after chloromethylation, the polyphenylene sulfide contains halogen and chlorine atoms in the structure, so that the polyphenylene sulfide can be subjected to a crosslinking reaction with 2,2' -bis (trifluoromethyl) diaminobiphenyl containing two equivalent amino groups in the structure, and then the polymer aerogel is obtained through ageing, washing, freeze drying and curing processes.
Further, in the second step, the preparation method of the organosilicon cross-linking agent specifically comprises the following steps:
mixing hydroxyl-terminated nitrile rubber with tetrahydrofuran, stirring, adding dimethyl vinyl chlorosilane and a catalyst, heating the system to 45-50 ℃, preserving heat, stirring for 2-8h, discharging, and purifying to obtain the organosilicon cross-linking agent.
Further, the molecular weight of the hydroxy-terminated nitrile rubber is 3000-5000.
Further, the catalyst is pyridine.
Through the technical scheme, under the catalysis of pyridine, hydroxyl at the tail end of a hydroxyl-terminated nitrile rubber molecular chain can generate nucleophilic substitution reaction with Si-Cl bond in a dimethylvinyl rate silane structure, so that unsaturated alkenyl functional groups are introduced into the tail end of the nitrile rubber molecular chain, and meanwhile, high-bond-energy organic silicon oxygen bonds are introduced to obtain the organic silicon cross-linking agent.
Further, the preparation method of the external wall heat preservation system comprises the following steps:
step I: uniformly scraping the heat-insulating daub on the surface of the wall base layer to form a heat-insulating layer with the thickness of 30-80mm;
step II: spraying an epoxy zinc-rich primer on the surface of the heat preservation layer until the primer covers the surface of the heat preservation layer completely to form a primer layer;
step III: after the primer layer is solidified, spraying a reflective heat-insulating coating on the surface of the primer layer to form a reflective heat-insulating coating with the thickness of 0.2-0.5mm, thereby obtaining the external wall heat-insulating system.
The invention has the beneficial effects that:
(1) According to the invention, the polymer aerogel is prepared and is used as an additive to be mixed with a coating base material, and because the polymer aerogel is of a three-dimensional network structure and contains a large number of air holes, each air hole wall can generate a heat shielding effect, and the existence of the large number of air holes can enable heat to be conducted in a polymer aerogel solid material along the air hole walls, and an infinite loose path effect is formed by infinite air hole walls, so that the solid heat conduction capacity is reduced to the minimum value, therefore, the polymer aerogel has good heat insulation performance, and the polymer aerogel has good compatibility with a coating emulsion, so that the problems that powder and slag are easy to fall off in the conventional inorganic aerogel can be solved, meanwhile, the polymer aerogel is cooperated with rutile type titanium dioxide with solar reflection capability to form a composite heat insulation system, and the external heat is effectively blocked, so that the aim of heat preservation is fulfilled. In addition, the polymer aerogel contains fluorine-containing hydrophobic groups and rigid benzene rings, so that the hardness and the hydrophobicity of the coating can be effectively improved, on one hand, the problem that the coating cracks and water seepage phenomenon are caused due to slight expansion, and on the other hand, the problem that the reflection effect of the coating is reduced due to water stains caused by rainwater wall hanging is also avoided.
(2) According to the invention, the organosilicon cross-linking agent is prepared, emulsion polymerization is carried out on the organosilicon cross-linking agent and the acrylic ester monomer, so that organosilicon modified acrylic ester emulsion is formed, and under the action of the cross-linking agent, an acrylic ester molecular chain can be in a cross-linked network structure, so that the cohesive energy of the emulsion can be effectively improved, the adhesive property of a coating is enhanced, and the phenomenon of falling off caused by lower adhesive strength is avoided. Meanwhile, the organic silicon is introduced into the acrylic ester molecular chain, so that a synergistic hydrophobic effect can be generated with a fluorine-containing hydrophobic group in the polymer aerogel, the heat resistance of the coating can be improved, and the problems that the coating falls off and the reflective heat insulation effect cannot be formed due to the fact that the coating is decomposed or aged in a high-temperature environment after being exposed for a long time due to high temperature in summer are avoided.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a scanning electron microscope image of the polymer aerogel prepared in example 1 of the present invention.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
1. Preparation of Polymer aerogel
Step S1: mixing 10g of polyphenylene sulfide with dichloromethane, fully swelling, adding 4.5mL of methyl chloromethyl ether and 0.5mL of stannic chloride, uniformly mixing, stirring for 18h in a temperature environment of 60 ℃, discharging, and washing and vacuum drying to obtain chloromethylated polyphenylene sulfide, wherein the average molecular weight of the polyphenylene sulfide is 10000;
step S2: mixing 5g of chloromethyl polyphenylene sulfide and N-methyl pyrrolidone, raising the temperature of the system to 80 ℃, stirring to form a uniform solution, adding 2.4g of 2,2' -bis (trifluoromethyl) diaminobiphenyl, uniformly mixing, stirring for 9h, pouring the solution into a mould, and standing for gelling to obtain a polymer aerogel sizing material;
step S3: and (3) placing the gel material of the polymer in a temperature environment of 60 ℃ for 8 hours, washing the gel material by using ethanol and pure water in sequence, freeze-drying, and curing the gel material in a temperature of 90 ℃ for 16 hours to obtain the polymer aerogel.
The polymer aerogel is subjected to scanning electron microscope analysis, and the test result is shown in fig. 1. As can be seen from fig. 1, the polymer aerogel is in a three-dimensional net structure and has rich air holes, and as each air hole wall can generate heat shielding effect, a large number of air holes exist to enable heat to be conducted in the polymer aerogel solid material along the air hole wall, and an infinite number of air hole walls form an infinite loose path effect, so that the solid heat conduction capacity is reduced to the minimum value, and the polymer aerogel has good heat insulation performance.
2. Preparation of organosilicon crosslinker
Mixing 10mL of hydroxyl-terminated nitrile rubber with the molecular weight of 4000 with tetrahydrofuran, stirring uniformly, adding 1.5mL of dimethylvinylchlorosilane and 2mL of pyridine, heating the system to 50 ℃, keeping the temperature, stirring for 6 hours, discharging, and purifying to obtain the organosilicon cross-linking agent.
Accurately weighing 0.2mL of organosilicon cross-linking agent sample, pouring into 10mL of dichloromethane, mixing into a uniform solution, transferring 20mL of Welch solution, dripping into the solution, shaking, standing in the dark for 1h, adding 100mL of pure water and 10mL of 15% potassium iodide solution by mass fraction into the solution, titrating with 0.1M sodium thiosulfate standard solution until the color of the solution changes, continuously dripping 1mL of 1% starch indicator into the solution until the color of the solution does not change, recording the milliliters of consumed sodium thiosulfate standard solution as V (mL), performing blank control test, and recording the milliliters of consumed sodium thiosulfate standard solution as V (mL) 0 (mL) using the formula
Calculating the unsaturated value of a sample, wherein M is the mass of the sample, and g; c is the concentration of the standard solution of sodium thiosulfate, mmol/g, and the calculated unsaturated value W of the sample is 0.614mmol/g.
3. Preparation of organosilicon modified acrylic ester emulsion
The first step: 8 parts of methyl methacrylate, 4 parts of butyl acrylate, 2 parts of acrylic acid, 1 part of hydroxyethyl methacrylate, 0.5 part of OP-10 and 20 parts of water are mixed for pre-emulsification to obtain pre-emulsion;
and a second step of: adding 32 parts of methyl methacrylate, 16 parts of butyl acrylate, 8 parts of acrylic acid, 4 parts of hydroxyethyl methacrylate, 1 part of organosilicon cross-linking agent and 0.1 part of potassium persulfate into the pre-emulsion, raising the system temperature to 70 ℃, preserving heat for 4 hours, naturally cooling the emulsion, regulating the pH of the system to be neutral by using ammonia water, and discharging to obtain organosilicon modified acrylate emulsion;
4. preparation of reflective heat-insulating coating
Step one: 60 parts of organosilicon modified acrylic ester emulsion, 2 parts of polymer aerogel, 0.5 part of film forming additive dipropylene glycol n-butyl ether, 0.5 part of defoamer SN1340 and 0.5 part of hydroxyethyl cellulose thickener with molecular weight of 10 ten thousand are poured into a stirrer and stirred for 30min at a rotating speed of 500r/min, so as to obtain premix;
step two: 10 parts of rutile titanium dioxide with the particle size of 600nm and 10 parts of bulk density less than or equal to 1g/cm are mixed 3 Pouring the hollow glass beads into the premix, and continuously stirring for 1h to obtain the reflective heat-insulating coating.
Examples
1. Preparation of organosilicon modified acrylic ester emulsion
The first step: 10 parts of methyl methacrylate, 4.5 parts of butyl acrylate, 3 parts of acrylic acid, 1.5 parts of hydroxyethyl methacrylate, 0.8 part of OP-10 and 25 parts of water are mixed and pre-emulsified to obtain pre-emulsion;
and a second step of: adding 40 parts of methyl methacrylate, 18 parts of butyl acrylate, 12 parts of acrylic acid, 6 parts of hydroxyethyl methacrylate, 1.5 parts of the organosilicon cross-linking agent prepared in the embodiment 1 of the invention and 0.2 part of potassium persulfate into the pre-emulsion, raising the temperature of the system to 80 ℃, preserving heat for 8 hours, naturally cooling the emulsion, regulating the pH of the system to be neutral by using ammonia water, and discharging to obtain organosilicon modified acrylate emulsion;
2. preparation of reflective heat-insulating coating
Step one: 70 parts of organosilicon modified acrylic ester emulsion, 3 parts of polymer aerogel prepared in the embodiment 1 of the invention, 1 part of film forming additive dipropylene glycol n-butyl ether, 0.6 part of defoamer SN1340 and 0.3 part of hydroxyethyl cellulose thickener with molecular weight of 15 ten thousand are poured into a stirrer, and stirred for 40min at a rotating speed of 800r/min to obtain premix;
step two: 15 parts of rutile titanium dioxide with the particle size of 500nm and 20 parts of titanium dioxide with the bulk density of less than or equal to 1g/cm are mixed 3 Pouring the hollow glass beads into the premix, and continuously stirring for 2 hours to obtain the reflective heat-insulating coating.
Examples
1. Preparation of organosilicon modified acrylic ester emulsion
The first step: mixing 12 parts of methyl methacrylate, 5 parts of butyl acrylate, 4 parts of acrylic acid, 2 parts of hydroxyethyl methacrylate, 1 part of OP-10 and 30 parts of water, and pre-emulsifying to obtain pre-emulsion;
and a second step of: adding 48 parts of methyl methacrylate, 25 parts of butyl acrylate, 16 parts of acrylic acid, 8 parts of hydroxyethyl methacrylate, 2 parts of the organosilicon crosslinking agent prepared in the embodiment 1 of the invention and 0.2 part of potassium persulfate into the pre-polymerized emulsion, raising the temperature of the system to 80 ℃, preserving heat for 12 hours, naturally cooling the emulsion, regulating the pH of the system to be neutral by using ammonia water, and discharging to obtain organosilicon modified acrylate emulsion;
2. preparation of reflective heat-insulating coating
Step one: 80 parts of organosilicon modified acrylic ester emulsion, 4 parts of polymer aerogel prepared in the embodiment 1 of the invention, 2 parts of film forming additive dipropylene glycol n-butyl ether, 1 part of defoamer SN1340 and 0.2 part of hydroxyethyl cellulose thickener with the molecular weight of 20 ten thousand are poured into a stirrer and stirred for 60 minutes at the rotating speed of 1000r/min to obtain premix;
step two: 20 parts of rutile titanium dioxide with the particle size of 200nm and 25 parts of titanium dioxide with the bulk density of less than or equal to 1g/cm are mixed 3 Pouring the hollow glass beads into the premix, and continuously stirring for 2 hours to obtain the reflective heat-insulating coating.
Comparative example 1
Preparation of reflective heat-insulating coating
Step one: 70 parts of commercial silicone-acrylic emulsion, 3 parts of polymer aerogel prepared in the embodiment 1 of the invention, 1 part of film-forming auxiliary agent dipropylene glycol n-butyl ether, 0.6 part of defoamer SN1340 and 0.3 part of hydroxyethyl cellulose thickener with the molecular weight of 15 ten thousand are poured into a stirrer, and stirred for 40 minutes at the rotating speed of 800r/min to obtain premix;
step two: 15 parts of rutile titanium dioxide with the particle size of 500nm and 20 parts of titanium dioxide with the bulk density of less than or equal to 1g/cm are mixed 3 Pouring the hollow glass beads into the premix, and continuously stirring for 2 hours to obtain the reflective heat-insulating coating.
Wherein the commercial silicone-acrylic emulsion is purchased from En chemical industry Co., ltd. In Anhui, the solid content is 47+ -1%, and the silicon content is 10%.
Comparative example 2
Preparation of reflective heat-insulating coating
Step one: 70 parts of commercial acrylic ester emulsion, 1 part of film forming additive dipropylene glycol n-butyl ether, 0.6 part of defoamer SN1340 and 0.3 part of hydroxyethyl cellulose thickener with molecular weight of 15 ten thousand are poured into a stirrer and stirred for 40min at a rotating speed of 800r/min to obtain premix;
step two: 15 parts of rutile titanium dioxide with the particle size of 500nm and 20 parts of titanium dioxide with the bulk density of less than or equal to 1g/cm are mixed 3 Pouring the hollow glass beads into the premix, and continuously stirring for 2 hours to obtain the reflective heat-insulating coating.
Performance detection
The reflective heat-insulating coating prepared in the invention example 1-example 3 is uniformly coated on the surface of a clean steel plate, the film thickness is 0.2mm, and after the reflective heat-insulating coating is completely cured, the following performance test is carried out:
testing the solar reflectance and the near infrared reflectance of the coating with reference to the standard JG/T235-2014; referring to national standard GB/T11205-2009, testing the heat conductivity coefficient of the coating by using a TC3100 type heat conductivity coefficient analyzer, and setting the test temperature to 25 ℃; referring to national standard GB 14007-2002, testing the bonding strength of the coating; using an LX-A type digital display hardness tester to test the Shore hardness of the coating; testing the water contact angle of the coating by using a TC-A3 type automatic contact angle measuring instrument; the steel sheet was placed in an oven at 150 c, and it was observed whether the coating developed a foaming or cracking phenomenon, and the time for the occurrence of the above phenomenon was recorded, and the heat resistance of the coating was evaluated, and the test results were shown in the following table:
as can be seen from the above table, the reflective heat-insulating coatings prepared in examples 1 to 3 and comparative examples 1 to 2 of the present invention have high solar reflectance and near infrared reflectance, and thus have properties of reflecting sunlight, and the reflective heat-insulating coatings prepared in examples 1 to 3 also have low heat conductivity, high adhesive strength and hardness, good heat resistance, high water contact angle value, and good water repellency.
The reflective insulation coating prepared in comparative example 1 uses conventional commercial silicone-acrylic emulsion as the coating base, and cannot generate a crosslinked structure, so that the bonding strength is low, but other performance performances are still acceptable due to the existence of the polymer aerogel.
The reflective insulation coating prepared in comparative example 2 not only uses conventional commercial silicone-acrylic emulsion as the coating base, but also has no polymer aerogel added, so that each performance is the worst.
The reflective heat insulation coating prepared in the embodiment 1-3 of the invention is adopted to prepare an external wall heat insulation system respectively, and the preparation method comprises the following steps:
step I: uniformly scraping the heat-insulating daub on the surface of the wall base layer to form a heat-insulating layer with the thickness of 50 mm;
step II: spraying an epoxy zinc-rich primer on the surface of the heat preservation layer until the primer covers the surface of the heat preservation layer completely to form a primer layer;
step III: after the primer layer is solidified, spraying a reflective heat-insulating coating on the surface of the primer layer to form a reflective heat-insulating coating with the thickness of 0.2mm, thereby obtaining the external wall heat-insulating system.
Wherein the heat-insulating cement is purchased from Anhui Chaojie novel building materials limited company.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the invention or beyond the scope of the appended claims.
Claims (10)
1. An external wall heat insulation system based on heat insulation cement reflective heat insulation coating is characterized by comprising a wall base layer, a heat insulation layer, a primer layer and a reflective heat insulation coating; the heat-insulating layer is formed by scraping heat-insulating daub on the surface of the wall base layer, and the thickness is 30-80mm; the primer layer is formed by spraying an epoxy zinc-rich primer with the solid content of 60-70% on the surface of the heat insulation layer; the reflective heat-insulating coating is formed by spraying reflective heat-insulating coating on the surface of the primer layer, and the thickness of the reflective heat-insulating coating is 0.2-0.5mm;
the reflective heat-insulating coating comprises the following raw materials in parts by weight: 60-80 parts of organosilicon modified acrylic ester emulsion, 2-4 parts of polymer aerogel, 0.5-2 parts of film forming additive, 0.5-1 part of defoamer, 10-20 parts of rutile type titanium dioxide, 10-25 parts of hollow glass microsphere and 0.2-0.5 part of thickener;
the polymer aerogel is polyphenylene sulfide aerogel;
the preparation method of the reflective heat-insulating coating comprises the following steps:
step one: pouring the organosilicon modified acrylic ester emulsion, the polymer aerogel, the film forming auxiliary agent, the defoaming agent and the thickening agent in parts by weight into a stirrer, and stirring for 30-60min at the rotating speed of 500-1000r/min to obtain premix;
step two: pouring rutile type titanium dioxide and hollow glass beads in parts by weight into a premix, and continuously stirring for 1-2 hours to obtain a reflective heat-insulating coating;
the preparation method of the organosilicon modified acrylic ester emulsion comprises the following steps:
the first step: mixing 8-12 parts of methyl methacrylate, 4-5 parts of butyl acrylate, 2-4 parts of acrylic acid, 1-2 parts of hydroxyethyl methacrylate, 0.5-1 part of OP-10 and 20-30 parts of water, and pre-emulsifying to obtain pre-emulsion;
and a second step of: adding 32-48 parts of methyl methacrylate, 16-25 parts of butyl acrylate, 8-16 parts of acrylic acid, 4-8 parts of hydroxyethyl methacrylate, 1-2 parts of organosilicon cross-linking agent and 0.1-0.2 part of potassium persulfate into the pre-emulsion, raising the temperature of the system to 70-80 ℃, preserving the temperature for 4-12 hours, naturally cooling the emulsion, regulating the pH of the system to be neutral by using ammonia water, and discharging to obtain organosilicon modified acrylate emulsion;
the organosilicon cross-linking agent is prepared by introducing unsaturated alkenyl functional groups at the molecular chain ends of hydroxyl-terminated nitrile rubber.
2. The external wall insulation system based on the heat preservation cement reflective heat insulation coating according to claim 1, wherein the film forming additive is dipropylene glycol n-butyl ether; the defoamer is SN1340; the particle size of the rutile type titanium dioxide is 200-600nm; the bulk density of the hollow glass beads is less than or equal to 1g/cm 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickener is hydroxyethyl cellulose with the molecular weight of 10 ten thousand to 20 ten thousand.
3. The external wall insulation system based on the heat preservation cement reflective heat insulation coating according to claim 1, wherein the preparation method of the polymer aerogel comprises the following steps:
step S1: mixing polyphenylene sulfide with dichloromethane, fully swelling, adding methyl chloromethyl ether and stannic chloride, uniformly mixing, placing in a temperature environment of 50-60 ℃ for stirring for 12-24 hours, discharging, and washing and vacuum drying to obtain chloromethylated polyphenylene sulfide;
step S2: mixing chloromethylated polyphenylene sulfide and N-methylpyrrolidone, raising the temperature of the system to 60-80 ℃, stirring to form a uniform solution, adding 2,2' -di (trifluoromethyl) diaminobiphenyl, uniformly mixing, stirring for 4-12h, pouring the solution into a mould, and standing for gel formation to obtain a polymer aerogel material;
step S3: and (3) placing the gel material of the polymer in a temperature environment of 50-60 ℃ for 6-12 hours, washing the gel material by using ethanol and pure water in sequence, and obtaining the polymer aerogel through freeze drying and curing processes.
4. The exterior wall insulation system based on the heat preservation cement reflective insulation coating according to claim 3, wherein in the step S1, the polyphenylene sulfide has an average molecular weight of 10000.
5. The external wall insulation system based on the heat preservation cement reflective heat insulation coating according to claim 3, wherein in the step S2, the mass ratio of chloromethylated polyphenylene sulfide to 2,2' -bis (trifluoromethyl) diaminobiphenyl is 1:0.4-0.6.
6. The external wall insulation system based on the heat preservation cement reflective heat insulation coating according to claim 3, wherein in the step S3, the temperature during curing is 80-100 ℃ and the time is 12-24h.
7. The external wall insulation system based on the heat preservation cement reflective heat insulation coating according to claim 1, wherein in the second step, the preparation method of the organosilicon cross-linking agent specifically comprises the following steps:
mixing hydroxyl-terminated nitrile rubber with tetrahydrofuran, stirring, adding dimethyl vinyl chlorosilane and a catalyst, heating the system to 45-50 ℃, preserving heat, stirring for 2-8h, discharging, and purifying to obtain the organosilicon cross-linking agent.
8. The exterior wall insulation system based on the heat preservation cement reflective insulation coating according to claim 7, wherein the molecular weight of the hydroxy-terminated nitrile rubber is 3000-5000.
9. The exterior wall insulation system based on the insulation cement reflective insulation coating according to claim 7, wherein the catalyst is pyridine.
10. The external wall insulation system based on the heat preservation cement reflective heat insulation coating according to claim 1, wherein the preparation method of the external wall insulation system comprises the following steps:
step I: uniformly scraping the heat-insulating daub on the surface of the wall base layer to form a heat-insulating layer with the thickness of 30-80mm;
step II: spraying an epoxy zinc-rich primer on the surface of the heat preservation layer until the primer covers the surface of the heat preservation layer completely to form a primer layer;
step III: after the primer layer is solidified, spraying a reflective heat-insulating coating on the surface of the primer layer to form a reflective heat-insulating coating with the thickness of 0.2-0.5mm, thereby obtaining the external wall heat-insulating system.
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| CN116239934B (en) | 2023-08-15 |
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